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3 years ago

10x - 4.5 + 3x = 12x - 1.1x=

Mathematics

1 answer:

Yanka [14]3 years ago

5 0

Answer:

x=3.4

Step-by-step explanation:

I could be wrong but I'm pretty sure this is the answer.

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Nine identical cakes weigh a total of 20¼ pounds. How much does each cake weigh? Simplify.

KATRIN_1 [288]

Answer:

$2\frac{1}{4}$

Step-by-step explanation:

20 1/4 = 20.25

20.25/9 = 2.25

2.25 = $2\frac{1}{4}$

Each cake weighs 2.25 pounds.

4 0

3 years ago

Simplify the quotient 4.5 x 10^3/9 x 10^7 . Write your answer in scientific notation. Show your work.

astra-53 [7]

4.5*10^3/9*10^7=4.5/9*10^3*10^7=0.5*10^3*10^7. a^b*a^c=a^(b+c), so 10^3*10^7=10^(3+7)=10^10. 0.5*10^10=5*10^9, since we want to write in scientific notation where the leading number is bigger than one and smaller than 10.

8 0

3 years ago

-3(2k + 5) = -8k +29<br> what’s the answer and the way to solve this?

Annette [7]

Step-by-step explanation:

-6k-15=-8k+29

-6k+8k=29+15

2k=14

2k/2=14/2

k=7

3 0

3 years ago

PLEASE ANSWER ASAP! THANK YOU! SUPER EASY! Mrs. Davis is planning to put a circular rug in her living room. The circumference of

netineya [11]

Answer:

Part A) The diameter of the rug is $10\ ft$

Part B) The radius of the rug is $r=5\ ft$

Part C) The area of the rug is $78.5\ ft^{2}$

Step-by-step explanation:

Part A) Find the diameter of the rug

we know that

The circumference of a circle (circular rug) is equal to

$C=\pi D$

where

D is the diameter

we have

$C=31.4\ ft$

$\pi=3.14$

substitute the values and solve for D

$31.4=(3.14)D$

$D=31.4/(3.14)=10\ ft$

Part B) Find the radius of the rug

we know that

The radius of a circle (circular rug) is half the diameter

we have

$D=10\ ft$

$r=D/2$

substitute

$r=10/2=5\ ft$

part C) What is the area the rug is covering?

The area of the circle (circular rug) is equal to

$A=\pi r^{2}$

we have

$r=5\ ft$

$\pi=3.14$

substitute

$A=(3.14)(5)^{2}$

$A=78.5\ ft^{2}$

7 0

4 years ago

Please help me with some Algebra 2. Last stretch of the trimester and it’s 3:13AM. It’s my own fault for getting myself into thi

son4ous [18]

Answer:

A. 23+(6-1)x-3

B. 93

Step-by-step explanation:

a) Nth term = F + (N - 1) x D, where F=First term, N=Number of terms, D=Common difference

6th row = 23 + (6 - 1) x -3

= 23 + (5) x -3

= 23 + (-15)

= 8 - number of boxes in the top row.

b) Sum = N/2[2F + (N - 1) x D]

= 6/2[2*23 + (6 - 1) x -3]

= 3 [46 + (5) x -3 ]

= 3 [46 + -15 ]

= 3 [ 31 ]

= 93 - total number of boxes in the entire display.

Hope this helps! Its 3:25 AM for me too so I know how you feel.

5 0

3 years ago

10x - 4.5 + 3x = 12x - 1.1x=​

10x - 4.5 + 3x = 12x - 1.1x=